Method and apparatus for maxing sectional ingot-mold feeders



M 8, mm 1,500,738

S. H. HOWARD ET AL METHOD AND APPARATUS FOR MAKING ECTIONAL INGOT MOLD FEEDERS Filed Dec. 29. 1923 5 Sheets-Sheet l 5] M uc n fo'aS July 8 1924,.

v 1506;738 8. H. HOWARD FT AL METHOD AND APPARATUS FOR MAKING SECITONAL' INGOT MOLD FEEDERS Filed Dec. 29. 1925 :5 Sheets-$heet July 8, 1924. mamas B. H. HOVJARD FT AL METHOD AND APPARATUS FOR MAKING SECTIONAL INGOT MOLD PEEDERS Filed Dec. 29 1923 3 SheeLsSh9L reamed July 1924.

UNITED-STATES HOWARD, O1, WASHHGTON, DISTRICT OI OOLUIBIA, AFB 3.,

- F TURNER, OI PITTSBURGH, rmmvama.

when m nrnwrtrs son xaxnse sac-noun, 111 .3 3; m I

- Toall'whomitmayconcern; Be it known'that Bmourmm H. Howann jand EnNasr-J. Toam, citizens of the United States, residingyrespeetively, at

6 Waehington,' District of Co umb1a, and

Pittsbur h, in -the county of Alleghen and .Another object of our invention is to ro-- vide a method and apparatus of 'this c aracter which is continuous in its operation and in which the hot top feeder can be so severed that there will be an interlocking between the severed sections so that when they are assembled they will be held against lateral movement to prevent the collapsing of the feeder.

A still further object of our invention is to provide a method and apparatus whereby the hot top feeder may be made of any desired form andat the same time provide a simple, cheap and reflective method and ap- 'as paratus having certain details of structure and combination of parts hereinafter more fullyd'escribcd.

In the accompanying drawings,

Figural is a yelt-ical sectional view of a cylinder showing our i'niproviai method. and" die for forming a sectional hot'top-fceder.

F igure 2' is a transverse horizontal sectio'nal view taken on the line 2-2 of- Figure 1.

tional view taken on tho. same line as l iguru form an interlocking connection between the seven-d sections.

on the line 4-4 of Figure 2'. Figures 5, 6, 7, 8, 9, 10, ll, 1-). and 11 show a' few of the numerous cuts made" by the difot' top .thc plunger 4 forced downwardly forcing 2 but showing a dill'ercnt form of cutter to Figure 4 is a verlirul sectional view taken Application filed December :9. was. mm to. ceases.

'ferent shaped cutters whereby an interlockthe new ingconnection "is formed between cred sections. V

Figure 14 shows a out such as would take place by the construction shown in Figures 1 and 2 of the drawings.

Referring now to the drawings 1 repre- I sents the cylinder which has to its lower end the member 2 ca ing a spreader 3 which is adapted to sprea and break up the lastic material as it is forced throng .by t e plunger 4. The plastic material'cmay Cl be fed into thecylinder in any desired'manner,' and the pressure employed by the piston. forces the plastic 11151431181. down around.- the spreader 3. Secured to the member'2'isia I similar member 5-having at its lower end 10' an outwa'r'dl extending flange 6 towhich is secured t eouter member! of the-dieJ This member 7 as shown is secured to the flange 6 by means of bolts 8. The spreader- 3 is rovided at its center with 'a downward yextending member 9 having an in terior screw thread-10 into which is screwed the screw 11 which firmly clamps the innerdie member 12 to the lower end of themenb her in its proper spaced relation tothe other member 7 of the die. p

rho-members Tand 11=as shown in Figure 1 of thedrawings form an annular passage 13 the upper end of which is slightly flared so as to form a' large passage into which the plastic material is forced and owi v.to' the contracting walls formed by the ale the plastic material is gradually compressed by-:.-

. the downward movement of theplunger, and 7 passes from the lower end of the die in a solid con'ipact form corresponding to the shape of the opening within the die. Belowthe lower end ofthe cylinder is a support 15 carried by thero dfllflwhich may be 4 moved upwardly by a ny-"desiied means and '95 upon which rests the lowef'end .of the hot top feeder as it is forced from the die. Figure 3 is a transverse horizontal ln operation the member 15 is raisedand downwardly and'so timed that the hot top feeder is supporu-Id thereby. After a hot top feedeixof the desired length has been foruu-d the apparatus is stopped and the hot i top feeder severed close to the-die and removed from the support 15. The support is then again raised to support the lower end of that portion of the hot top feeder being forme In order to sever the hot top feeder into several sections the inner wall of the member 12 of the die has secured ,thereto by means of a screw 17 a piano wire 18 which space between the two die members so as to more accurately sever the hot top feeder as it is forced from the die. While we have shown and described this form of fastening and tightening the piano wire below the lower end of the die it will be understoodthat this could be accomplished in many ways and do not care to limit ourselves to the specific structure shown. The hot top feeder as heretofore described is forced by pressure from the die and the wires 18 sever it in a transverse line so that in reality the hot top feeder is cut or formed in any desired number of sections and to be afterwards assembled to form a single unit.

,In Figures 3 and 4 of the drawings, instead of having a piano 'wire for severing the hot top feeder into a number ofsections, we have employed saw blades arranged whereby the cuts may be of any desired form such as shown in Figures 5 t0 13 in-- elusive.

This is accomplished by having the saw blades 20 which have rigidly secured to their outer ends, the vertically disposed plates 21 and 22. The plate 21 is secured to the wall of the die member 12 by means of a screw 23. The plate 22 is secured to the die member 7 by-means of a screw 24, all of which is fully shown in Figure 4: of the drawings. 13 this structure it will be seen that the saw blades as heretofore described can be made of any desired shape so that any of the shapes out such as shown in Figures 5 to 13 inclusive may be made while severing the hot top feeder and whereby an interlocking joint is formed between the sections, which are later assembled to form a single unit. This operation forms ajoint that. holds the sections together, yet allows the ready se'paration'of the sectlons when removed from the supporting table 15 It will also be understood that the applicants do not desire to limit themselves to the specific means of saw blades and means of attaching them to the die members but the same could be modified in numerous ways.

Having thus fully the annular passage.

5. A die for forming'sectional hot top 1. A method of forming sectional hot top feeders consisting in forcing the plastic material through a die and severing it into llongitudinal sectionsvas it passes from the 2. The method of forming a hot top feeder consisting of forcing plastic material through a correspondingly shaped die and severing the same into several. longitudinal sections as it passes from the die to form a 7 series of sections...

3. A die for forming sectional hot top feeders consisting of a member having an annular assage through which plastic material s forced and cuttin ranged at the lower endof the ie for severing same into several longitudinal sections.

a. A die for forming sectional hot top feeders consisting ofa member having an annular passage therethrough, which plastic material is forced by pressure and cutting means adjustably secured to the die and extending across the lower end of feeders comprising a member having an annular contracted passage therethrough and cutting means supported by the mem-- her and extending across the lower end of the annular passage. l

6. A die for forming sectional hot top feeders. comprising a member having Ian annular passage therethrough and cutting means carried by the die and extending across the lower end of the annular passage and shaped to form an interlocking connection between thesevered sections.

7. A die for forming a sectional hot top feeder comprising a member having a contracted annular passage through which 106 plastic member is forced and cutters arranged below the lower end-of the annular passage for severing the hot top feeder into a series of longitudinal sections.

8. A die forming hot top feeders compris- 110 ing a member having a contracted passage through which plastic material is forced and cutters removably carried by the die and extending across the lower end of the annular passage and of a shape to form an interlocking connection to sever same as it passes from the annular passage.

9. An apparatus for forming sectional hot top feeders comprising a cylinder, a

spreader therein, a die member secured to the lower end of the cylinder, a second -die member secured to the spreader and spaced from the filst die member, formin a contracted annular passage between tie same and cutters carried by the lower ends of the die members and-extending across the lower end of the annular passage.

10. An ap aratus for forming sectional hot top feed ers comprising a cylinder, 9.

piston therein, a spreader supported by the N means ar- 80 through 1 linden time 'r i e supported,

y 1 the sp'rem'ler and slipported by tlie ezh'n'der, v s, se cond die- 5pm ro thell first die member' and; l :dnpted {to form a contracted annular pas ea'gebetween the die membi'g, a cutter ear- I the; die and extending.

across the lower end of the passage and of a shape to form an interlocking connection between the severed sections.

In testimony whereofwe efiix our signavures.

" BLOOMFIELD H. HOWARD.

' ERNEST J. TURNER. 

